Wire attachment for electrical devices.



H. TRUMBULL. WIRE ATTACHMENT FOR ELECTRICAL DEVICES.

APPLIOATION FILED 001219, 1905,

922,360. Patented May 18, 1909.

Mai M65565: T

624x11." T v I UNITED STATES PATENT OFFICE.

HENRY TRUMBULL, OF PLAINl/ILLE, CONNECTICUT, ASSIGNUR TO TRUMBULL ELECTRIC MANUFACTURING COMPANY, OF PLAINVILLE, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

WERE ATTACHMENT FOB, ELECTRICAL DEVICES.

' To all who'm it may concern:

Be it known that I, HENRY TRUMBULL, a citizen of the United States, and a resident bf Plainville, in the county of Hartford and State of Connecticut, have invented a new Wire Attachment for Electrical Devices, of which the followin is a specification.

My invention re ates to that class of devices used for securing the end of a wire in electrical contact therewith, and the objectof my mvention is to provide a device of this class in the used which a wire ma be easily attached thereto with little trou le or inconvenience; and a further object of the invention is, to provide a device that may be employed for other purposes than that of secunngthe wire; and a further object of the invention is to provide a device of this class that shall assist in securing the electrical parts used in connection therewith permanently in position.

A'form-of device in the use of which these objects may be attained is illustrated in the accompanying drawings, in which- Figure 1 is a top or plan view of a switch base with my unproved wire attaching means locatedthereon. lengthwise section. through the device on line :ca: of Fig. 1. Fig. 3 is a perspective view'showing my improved wire attaching means. Fig. 4 is a perspective view showing another manner of use of my wire attaching means. Fig. 5 is a view in section through a iportion of the switch plate showing a modi not limited to use in any speci 0 form of device, but may be readily applied in numerous cases where It is desired to firmly attach the end f a wire to secure an electrical connection. In the drawings herein I have shown a switch as a device in connection with which Indy improved Wire attaching means is readily a apted, the cli s forming pivotal .su ports for the switch lades, being provide with my improved attaching means, and the con-- Specification of Letters Patent.

Application filed October 19, 1905.

Fig. 2 is a view in Patentednay 1-8, 1909;

Serial No. 283361.

, taste for such blades also being provided with the improved attaching means.

. The clips 2 are located in shallow recessesillustrated as used in connection with a clip I l 2 includes a narrow plate bent to form a base 9 and an n ward extending wire suppprt 10.

This attaching means is preferably ert in i the form of a V and when used-in connection with. the clips for the pivotal support of the i switch the see 9 islooated underneath the cli-p, as shown in Fig. 4 of the drawings, and the wire support 10 extends upward, its upper end lying in close proximity to one side of the clip or support 7 against which it may bear as a support. A screw 11 is threaded into the support 10 as a means of clamping the wire firmly in position.

In many instances in devices of this characterthe clips or contacts are located in recesses in the insulated base, and the binding screws are located in a comparativel thm iece within these recesses so that it IS difficult to secure a wire in place. By my im roved device the binding screw is locate in an inclined osition and raised well above themsulater base, so that it is comparatively an eas matter to secure the wire in position.

' Iii the form of device shown especially in Fig. 3 of the drawings my improved attaching means has its base 12 located on the upper Surface of the. foot of the switch contact 4, and the base is bent downward as at 13 so that its under surface will lie in line with the under surface of the foot of the contact and within the contact recess 14 in the base. By this construction a steady support for the contact and wire attaching means is formed in the bottom of the recess and the device as a whole is eflectually prevented from turning movement. The up er free end of the in clined portion 10 o the wire support in which 1s seated the binding screw 11 lies close to the edge of the contact so that the lattermay constitute a support for,the said part 10, to hold it in position even thou h considerable force be exerted in turning t e screw 11. A screw 15 extends u ward through the insulated base in the wane manner to securethe contact in position, and a to secure by Letters Patent is i the 1 them the switch blade, a wire attachment 1 formed of a bent plate of metal having a base secured to the contact arms and extending l beyond the same in front of the openin between them, and a portion 10 incliner up wardly and also toward the arms of the contact and arranged to form a stop for the switch blade when in. engagement with the said arms, and a binding screw seated in the said inclined portion of the wire attachment and arranged to secure a wire to the outer face thereof.

similar screw is em Iloyed for holdinp cli s for the switch blades in position.

vhen devices of this class are used with an ipsulated base 1 of slate or like material it is a i ifficult matter to provide recesses in the surface of the base and the clips and contacts are therefore frequently located on the smooth upper surface of the base. In order to securel old the parts from turning movel ment, anr thus prevent their getting loose I adapt my improved wire attaching means 17 to such a construction. The attaching 1 means is similarly formed as above described and shown in Fi 3. A lug 18 is formcdon the bottom of tie attachment, engaging a recess 19 made in the upper part of the base 1. This lug l8'is preferably formed by cutting a tongue within the substance of the base and bendin this tongue downward to engage an opening in the support, said tongue form the lug, as [fia'inly shown in Fig. 5. forming the sole means for preventing turn- It will be noted that when my improved l ing movement of the base, and means for sewire attachment is used in connection with a curing a wire to said support. switch contact the wire support, in addition 3. The combinat on with an insulating to providing means for rear y attachment ofa base and a pivoted switch blade mounte wire, also serves as a stop for the switch thereon, of an electric contact mounted. on blades, and also as a means for securing the the base, a plate separate from and connected connections against turmnri movement, with the contact and extending laterally which .would cause them to ecome loose.

The wire attachment is located at the outer edge of the switch contact, that is, at that edge not facin the opposite contact, and is 1 thus in accessible position for attachment of or the switch blade, and means seated in the a line wire.' upwardly bent portion of the plate for se What I claim as my invention and desire curing a. wire thereto.

HENRY TRUMBULI 1 electrical device secured. thereto and ro- 1 jecting therefrom, a wire attachment inc udmg a plate of metal havlng a base secured to i sa d electrical device, a tongue partially cut from the base and downwardly projecting to therefrom, the outer end of the plate being bent upwardly and backwardly so that its portion of the electric contact to form astop 1. The combination with a supportin i base and. a movable switch blade supported thereon, of a pair of contact arms su )ported i by the said base adapted to receive etwecn Witnesses:

C. W. JoNEs, J. H. 'lRUMBULL.

2. A support of insulating material, an-

free end lies in close proximity to the outer 

